As a different solution can you try to pick up this revert? It will more closely match what happened in the upstream kernel then.
commit 7e7cb7a13c81073d38a10fa7b450d23712281ec4 Author: Mario Limonciello <[email protected]> Date: Thu May 22 09:13:28 2025 -0500 Revert "drm/amd: Keep display off while going into S4" commit 68bfdc8dc0a1a ("drm/amd: Keep display off while going into S4") attempted to keep displays off during the S4 sequence by not resuming display IP. This however leads to hangs because DRM clients such as the console can try to access registers and cause a hang. Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/4155 Fixes: 68bfdc8dc0a1a ("drm/amd: Keep display off while going into S4") Reviewed-by: Alex Deucher <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mario Limonciello <[email protected]> Signed-off-by: Alex Deucher <[email protected]> (cherry picked from commit e485502c37b097b0bd773baa7e2741bf7bd2909a) Cc: [email protected] ** Bug watch added: gitlab.freedesktop.org/drm/amd/-/issues #4155 https://gitlab.freedesktop.org/drm/amd/-/issues/4155 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2121449 Title: Unable to put display on standby after resuming from hibernate To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-hwe-6.14/+bug/2121449/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
